It is important to do some preparation before the documentation can begin. If a panel has not been visited for years, some clearing is nescessary! The “clearing-time” depends on the time-span since the previous documentation. Someone will maybe think: why document, if the panel has already been documented? –Even though a panel has been documented, it can be important to document again because:
- It is important to know if the rock surface and images have changed due to weathering or degradation, since the last documentation.
- It is important to have different documentations of the same panel, so one can really investigate and check the different presentations of the same images, based upon the use of different documentation methods.
Before the documentation, it is also a very good idea to do a “survey” of the panel at night with a flashlight. In this way the contours of most carvings will appear, and usually weathered carvings also appear. The carvings are chalked, and checked again in daylight. It is a funny challenge to take photos of the motives at night. There are many methods to do this, either one can take the photo, while the flashlight comes from one angle. Another option is to take the photo, while moving the flashlight, so the beam of light is moved up and down. If you have a camera, which can be set to take the picture with a long shut-time, you can also use a camera-flash to create a dramatic picture.